Norgren R74M Series User Manual
Excelon, R74m, Manifold regulator

Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document.
4/09
N/US - 5.4.210.01
Excelon
®
R74M
Manifold Regulator
1/2" and 3/4" port sizes
Technical data
Fluid: Compressed air
Maximum pressure
290 psig (20 bar)
Operating temperature*
-30° to 175°F (-34° to 80°C)
* Air supply must be dry enough to avoid ice formation at
temperatures below 35°F (2°C).
Ports
Inlet ports (2): 1/2" or 3/4" PTF or ISO G
Outlet port (1): 1/2" PTF with PTF inlet ports,
1/2" ISO Rc with ISO G inlet ports
Gauge port (1): 1/8" PTF with PTF inlet ports,
1/8" ISO Rc with ISO G inlet ports
Materials
Body: Zinc
Bonnet: Zinc
Elastomers: Nitrile
Bottom plug: Acetal
Excelon
®
design allows in-line or
modular installation
Manifold typically up to six
regulators without booster signal
RoHS compliant
Inlet Port (2)
Outlet Port (1)
Model
Flow† scfm (dm3/s)
Weight lb (kg)
1/2"
1/2"
R74M 4AK RMG
220 (105)
1.77 (0.8)
3/4"
1/2"
R74M 6AK RMG
220 (105)
1.73 (0.78)
Ordering Information.
Models listed include PTF threads, knob adjustment, relieving diaphragm, 5 to 150 psig (0.3 to 10 bar) outlet pressure adjustment
range* with gauge.
Alternative Models
R74M ˙˙˙ ˙˙˙
Inlet Port Size
Substitute
1/2"
4
3/4"
6
Gauge
Substitute
With
G
Without
N
Outlet Pressure Adjustment Range*
Substitute
5 to 60 psig (0.3 to 4 bar)
F
5 to 150 psig (0.3 to 10 bar)
M
10 to 250 psig (0.7 to 17 bar)**
S
Diaphragm
Substitute
Relieving
R
Non relieving
N
* Outlet pressure can be adjusted to
pressures in excess of, and less than,
those specified. Do not use these units
to control pressures outside of the
specified ranges.
** Units with 250 psig (17 bar) outlet pressure range are available
only with the T-bar adjustment. Substitute “T” in the 7th position
and “S” in the 9th position.
† Typical flow with 150 psig (10 bar) inlet pressure, 90 psig (6.3 bar) set pressure and a 15 psig (1 bar) droop from set.
Adjustment
Substitute
Knob
K
T-bar
T
Threads
Substitute
PTF
A
ISO Rc taper
B
ISO G parallel
G
ISO Symbols
R7*G Relieving
R7*G Non Relieving
0
20
40
60
80
100
dm
3
/s
AIR FLOW
0
40
80
120
160
200
scfm
6
4
2
0
b
a
r
g
100
80
60
40
20
0
p
s
ig
PORT SIZE: 1/2"
INLET PRESSURE: 150 psig (10 bar g)
RANGE: 5 to 150 psig (0.3 to 10 bar)
FLOW CHARACTERISTICS